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Intelligent reflecting surface (IRS) can smartly adjust the wavefronts in terms of phase, frequency, amplitude and polarization via passive reflections and without any need of radio frequency (RF) chains. It is envisaged as an emerging…

信号处理 · 电气工程与系统科学 2023-06-29 Syed Agha Hassnain Mohsan , Yanlong Li

Intelligent reflecting surface (IRS) has been recognized as a powerful technology for boosting communication performance. To reduce manufacturing and control costs, it is preferable to consider discrete phase shifts (DPSs) for IRS, which…

信息论 · 计算机科学 2023-11-07 Guojie Hu , Qingqing Wu , Dognhui Xu , Kui Xu , Jiangbo Si , Yunlong Cai , Naofal Al-Dhahir

Intelligent reflecting surface (IRS) is a proposing technology in 6G to enhance the performance of wireless networks by smartly reconfiguring the propagation environment with a large number of passive reflecting elements. However, current…

信息论 · 计算机科学 2020-02-17 Jinglian He , Kaiqiang Yu , Yuanming Shi

In this paper, the secure performance of multiuser multiple-input single-output wireless communications systems assisted by a multifunctional active intelligent reflection surface (IRS) is investigated. The active IRS can simultaneously…

信号处理 · 电气工程与系统科学 2022-05-06 Shaokang Hu , Derrick Wing Kwan Ng , Jinhong Yuan

This letter presents a detailed performance analysis of the intelligent reflecting surface (IRS) aided single-input single-output communication systems, taking into account of the direct link between the transmitter and receiver. A…

信息论 · 计算机科学 2020-08-04 Qin Tao , Junwei Wang , Caijun Zhong

One of the main challenges facing optical wireless communication (OWC) systems is service disconnection in high blockage probability scenarios where users might lose the line of sight (LoS) connection with their corresponding access points…

系统与控制 · 电气工程与系统科学 2023-04-04 Ahrar N. Hamad , Ahmad Adnan Qidan , Taisir E. H. El-Gorashi , Jaafar M. H. Elmirghani

The employment of intelligent reflecting surfaces (IRSs) is a potential and promising solution to increase the spectral and energy efficiency of wireless communication networks. Despite their many advantages, IRS-aided communications have…

信息论 · 计算机科学 2021-03-26 Constantinos Psomas , Ioannis Krikidis

Intelligent surfaces (ISs) have emerged as a key technology to empower a wide range of appealing applications for wireless networks, due to their low cost, high energy efficiency, flexibility of deployment and capability of constructing…

Full-duplex (FD) transmission has already been regarded and developed as a promising method to improve the utilization efficiency of the limited spectrum resource, as transmitting and receiving are allowed to simultaneously occur on the…

信号处理 · 电气工程与系统科学 2020-05-27 Gaofeng Pan , Jia Ye , Jianping An , Mohamed-Slim Alouini

Intelligent reflecting surface (IRS) has recently received much attention from the research community due to its potential to achieve high spectral and power efficiency cost-effectively. In addition to traditional cellular networks, the use…

信息论 · 计算机科学 2023-03-17 Wei Jiang , Hans D. Schotten

Intelligent Reflecting Surface (IRS) has been a promising solution to enhance wireless networks both spectral-efficiently and energy-efficiently. This paper considers an IRS-assisted the Internet of Things network for massive connectivity.…

信号处理 · 电气工程与系统科学 2019-11-28 Shuhao Xia , Yuanming Shi

The performance of wireless communication systems is fundamentally constrained by the random and uncontrollable wireless channel. By leveraging the recent advance in digitally-controlled metasurface, intelligent reflecting surface (IRS) has…

信息论 · 计算机科学 2022-04-06 Changsheng You , Beixiong Zheng , Weidong Mei , Rui Zhang

Intelligent reflecting surface (IRS) has recently been envisioned to offer unprecedented massive multiple-input multiple-output (MIMO)-like gains by deploying large-scale and low-cost passive reflection elements. By adjusting the reflection…

信号处理 · 电气工程与系统科学 2020-07-15 Gui Zhou , Cunhua Pan , Hong Ren , Kezhi Wang , Arumugam Nallanathan

Wireless communications via intelligent reflecting surfaces (IRSs) has received considerable attention from both academia and industry. In particular, IRSs are able to create favorable wireless propagation environments with typically…

信息论 · 计算机科学 2020-01-31 Xianghao Yu , Dongfang Xu , Robert Schober

Integrated sensing and communication (ISAC) has attracted growing interests for sixth-generation (6G) and beyond wireless networks. The primary challenges faced by highly efficient ISAC include limited sensing and communication (S&C)…

信号处理 · 电气工程与系统科学 2023-11-02 Kaitao Meng , Qingqing Wu , Christos Masouros , Wen Chen , Deshi Li

Intelligent reflecting surfaces (IRS) have emerged as a promising technology for future 6G wireless networks, offering programmable control of the wireless environment by adjusting the phase shifts of reflecting elements. However, IRS…

信号处理 · 电气工程与系统科学 2025-05-08 Xianhua Yu , Dong Li

Intelligent reflecting surface (IRS) has emerged as a cost-effective solution to enhance wireless communication performance via passive signal reflection. Existing works on IRS have mainly focused on investigating IRS's passive…

信息论 · 计算机科学 2022-07-19 Beixiong Zheng , Rui Zhang

In this paper, we propose intelligent reflecting surfaces (IRS) assisted secure wireless communications with multi-input and multi-output antennas (IRS-MIMOME). The considered scenario is an access point (AP) equipped with multiple antennas…

信息论 · 计算机科学 2020-01-27 Weiheng Jiang , Yu Zhang , Jinsong Wu , Wenjiang Feng , Yi Jin

In the past as well as present wireless communication systems, the wireless propagation environment is regarded as an uncontrollable black box that impairs the received signal quality, and its negative impacts are compensated for by relying…

信号处理 · 电气工程与系统科学 2022-09-14 Cunhua Pan , Gui Zhou , Kangda Zhi , Sheng Hong , Tuo Wu , Yijin Pan , Hong Ren , Marco Di Renzo , A. Lee Swindlehurst , Rui Zhang , Angela Yingjun Zhang

Intelligent reflecting surfaces (IRSs) have several prominent advantages, including improving the level of wireless communications security and privacy. In this work, we focus on this aspect and envision a strategy to counteract the…

网络与互联网体系结构 · 计算机科学 2021-08-03 Francesco Malandrino , Alessandro Nordio , Carla Fabiana Chiasserini